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laxative, for which purpose they may be given to infants, in dosesof 5ij to 3SS; but their chief use is for the distillation of oil ofroses, and rose water, and for preparing a syrup. See Otto ofRoses.Enters into Aq. Rosaa. L. E. D. Syr. Rosse. L. E.

Ros,e Gallic.se Petala. L. E. D. P. Red Rose Petals. Rosa rubra.O. These are fragrant, and feebly astringent, and bitterish, andused as a gentle tonic, in form of powder, confection, infusion,honey, and syrup.Enters into Confect. Rosaa. L. E. D. Infus. Rosas. L. E. D. MelRosse. L. D. Syr. Rosse. E.

Rosa Moschata. P. Rosa pallida. P., and Rosa alba flore pleno. P./have similar properties to the preceding.

Rosemary Oil. See Oleum Rosmarini.

Rosin. See Resina and Resins.

Roseate Powder. A nostrum, sold as a depilatory for removingsuperfluous hair, and composed of 3J of orpiment (sulphuret ofarsenic), and 3X each of quicklime and starch. It is consequently apowerful escharotic, and hazardous to use.

Rose Beads, or Pearls, are prepared by beating, for several hours,the petals of the red rose, in an iron mortar, till formed into a deepblack paste. This is rolled into the form of beads, and dried, whenthey will take a fine polish, and retain the fragrance of the rose,and may be made into necklaces.

Rose Drops, Conserves, &c. See Drops, Lozenges.

Rose Pink. A pigment, made by dyeing chalk, or whitening, with adecoction of Brazil wood and alum.

Rose's Alterative Drops are composed of an alcoholic solution of oxy-muriate of mercury, and a vinous solution of tartarized antimony.On mixing these, a double decomposition ensues, the potass of thetartarized antimony precipitating at the same time peroxide of mer-cury and protoxide of antimony, which result from the process. Thephial, therefore, requires to be shaken when the dose is dealt out,in order to incorporate the insoluble materials.Medicinally the peroxide of mercury is the active ingredient, while theantimony disposes the stomach to become more easily influenced byit. (Dr. Paris.)

Rosmarini Cacumina. L. E. D. P. Rosemary Tops and Leaves. Ros-marinus officinalis. These have a fragrant odour, and a hot, aro-matic, and bitterish taste.Medicinally they are tonic and stimulant, in doses of gr. x to 5ss ofthe powder. In nervous head-ache, and atonic dyspepsia, a weakinfusion of the fresh leaves is a pleasant substitute for tea. They